If you would like to reorganize statuses in the kanban, this can be done in two ways depending what you would like to do.
Option 1. Move a tasks from one status to another
So if you would like to move a task from one status to another, simply drag and drop a task from one status to another
Option 2. Organize order of your tasks in you status
So if you have many tasks in one status, then you can organize the order of those.
Simply drag and drop the task in desired order area.